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24 November 2023 Development of viscoelastic thin films to mitigate shock wave-induced laser damage in high power laser systems
Amira Guediche, Laurent Belliard, Bernard Perrin, Marc Duquennoy, Amandine Moiny, Mathieu Lafarie, Michel Boustie, Emilien Lescoute, Philippe Belleville, Hervé Piombini
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Proceedings Volume PC12726, Laser-Induced Damage in Optical Materials 2023; PC127260A (2023) https://doi.org/10.1117/12.2685395
Event: SPIE Laser Damage, 2023, Dublin/Livermore, California, United States
Abstract
Spallation effects caused by shock waves in optical components such as those used in the Laser MegaJoule facility during laser operation can lead to material fracture. One solution could be to use a viscoelastic thin film on these fused silica components to reduce the reflection of shock waves from the rear surface, but it must have excellent optical, mechanical, and power-handling properties. Among the viscoelastic materials investigated were Nafion and polydimethylsiloxane-based ormosil, with ormosil synthesized using a sol-gel process. The materials were characterized optically and especially tested for acoustic attenuation. These materials, as thin films deposited on a fused silica substrate, were studied under shock wave propagation using the laser shock technique. Preliminary results showed that these thin films have interesting properties that could help reduce mechanical damage to optical components.
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Amira Guediche, Laurent Belliard, Bernard Perrin, Marc Duquennoy, Amandine Moiny, Mathieu Lafarie, Michel Boustie, Emilien Lescoute, Philippe Belleville, and Hervé Piombini "Development of viscoelastic thin films to mitigate shock wave-induced laser damage in high power laser systems", Proc. SPIE PC12726, Laser-Induced Damage in Optical Materials 2023, PC127260A (24 November 2023); https://doi.org/10.1117/12.2685395
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KEYWORDS
Thin films
Laser induced damage
High power lasers
Laser systems engineering
Optical components
Viscoelasticity
Optical properties
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